Car wheel



Patented Dec. is, 192e.J

UNITED STATES iJl-Ela'r4 OFFICE.

NELSON R. BROWN YER, 0F DETROIT, IIllICHIGAN, ASSIGNOR, TO THE TIMKEN-DETROIT n AXLE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION 0F MICHIGAN.

i can WHEEL'.

Application filed August 8, 1927. Serial No. 211,332.

Fig. 2 is a longitudinal sectional view of a part of the wheel.

My wheel comprises a hub portion 1, which is shown with a central bore suitable for mounting on an axle 2. Extending out-L wardly from this hub and preferably integral therewith is a wide annular rib or web 3 with a cylindrical periphery. The peripheral portion of this rib-is widened by means 'of an annular iange 4 on the inner face tliereof so as to increase the bearing surface of said periphery. The marginal portion ofthe outer face of the rib or webiis offset inwardly with respect to the plane of-said outer face, so as to aiford a seat or bearing for a member 5 hereinafter designated as the brake drum` member. f j 4 The outer en d portion of this brake drum member which is also its portion of least diameter, is in the form of an annular flange 6 that fits latwise against the face of said hub rib in the seat provided therefor and which is integral with a hollow cylindrical portion of such diameter as to fit over the peripheral' bearing surface of said hub rib 3. Said end flange 4 of this brake drum member, which is disposed radially, is clamped flatwise against said hub rib 3 by screwsj' or otherfastening devices that extend througlthein.;

From the radially .inner angular portion- 8 of the brake drum member, being the longitudinally outer endv portion thereof, ain annular web portion 9 extends obliquely outwardly with relation Ito the axis of the hub and inwardly with respect to the'longitiidinal center line of the car. This oblique'ly disposed web portion 9 terminates in a brake dium 10 whose inner-surface is of cylindrical form and l'adapted for cooperation with the friction member or members of an internal or expanding brake of any suitable type, such forA instance, as an' expanding band. The

.shoulders 12. At

bers. I Clamping bolts 20 extend t outer surface of this cylindrical drum is formed with an annular rib 11 about midway of its length, the thickness of Said rib increasing gradually from its outer periphery until it meets the outer surface of the body portion l of saiddrum. This outer surface of the drum tapers from said rib towards both ends thereof, where said drum is provided with ribs or intervals around its circumstance the rib of the brake drumvmember is provided with semi-circular notches 13.

The rim portion This'rim portion, which is madewith an ordinary conical tread and rail flange, has an inwardly. extending annular rib l5 located substantially midway thereof. This lannular rib extends inwardly to apoint where its inner diameter is ameter ofthe rib on the brakedrum member; and the inner rib 15 ofsaid rim mem- 14 of the wheel is mounted on the brake drum member.

only slightly greater than the outer diber is provided with semi-circular notches 16 of proper size and properly positioned to match the semi-circular notches 13 in the rib 11 of the brake drum member.

Surrounding the brake drum member are two series of insulating members 17, preferw ably rubber, which are shaped tofit against the outer surface ofthe brake vdrum member and the shoulders 12 thereof and also against the sides-of the rib 1'1 thereof,-and at'the same time fit against the sides of the rib 15 of the rim member and against the inner cylindrical surface of said rimmember. The insulationvmembers are provided'with perforated lateral bosses 18 which fit the semicircular notches 13 and 16 vprovided there-l for in the ribs ofthe brake drum member and of the rim member',Y respectively. Rings 19 of angular or channel section alongside o-f'- said insulation members serve as clamping members. The inner flange of these rings is inclined conformably to the inclination of the outer surface of (or rather conformably -to 'the insulation the brake drum member, y

membelsthat rests on said surface) and the l outer ange of said rings is inclined conformably to the Ainclined inner surface of said rim member, while the web or middle member of such rings bears flatwise against the radial portions of the insulatin memro-ugh .h oles provided therefor 1n said clamping rings and through the insulation members and their perforated bosses and are provide-d .lio

40 Alterposed between said ribs and with suitable Washers and loekinfir devices.

The central portion of the boltsy eing theportion which is in contact with the insulating material, is preferably larger than the 5 outer portions of the bolt that are in contact with the clamping plates.

The construction' thus described is made up of parts that are easy and inexpensive to manufacture and as the rim portion is entirely insulated from the inner portions of the wheel, 'vibrations and noises are very much deadened. The construction makes it feasible to use an internal expanding brake and especially makes it feasible to locate the' brake on the iniiei side of the wheel,` where surface has a circumferential rib atthe mid,-

dle part thereof and thence tapers towards each end, said rim portion having an internal annular rib, and means engaging said rib to mount said rim on said drum.

2. A car wheel comprising a` a web portion and a rim portion, said web portion having on its inner side a brake drum whose inner tion with a friction member and whose outer surface li asia circumferential rib, the rim portion having an annular rib in the plane of said drum rib but slightly spaced therefrom,

clamping rings that overlap said rings on both lsides thereof, rubber or like material insaid rings, and bolts for clamping said rings together, said ribs having mating notches in their edges for said bolts. v f 3. A car wheel comprising a hub portion,

a web portion and' a rim portion, said web 'portion having on its inner side .a bra-ke drum whose inner surface is adapted for'cooperation with a friction Amember' and whose outer surface has a circumferential ribl at thel inid- '5 0 dle partthereof and'then'ce tapers towards each end, a rim portion vhaving an interior annular rib in the plane of saiddrurn rib, dlamp-y iing rings that overlapl said ribs on both sides thereof, insulating members interposed between .said rings and said'ribs, and bolts for clamping said ringstogeth'er, said rings being hub portion,

surface is adapted for coopera-- of siich cross-sectional sha-peas to press said insulation against said ribs and also against said drum and said rim, and said ribs having mating notches to accommodate said bolts.

4. -A car wheel comprising a hub portion, a web portion and a rim portion, said web portion having on its inner side a brake drum whose inner surface is adapted for cooperation with a friction member and Whose outer surface has a circumferential r'b at the middle part thereof and thence tapers towards each end, a rim portion having an interior annular ribin the plane of said drum rib, clamping rings that overlap said ribs on both sides' thereof, insulating members interposed between said rings and said ribs and provided with perforated lateral bosses, bolts extending through said bosses for clamping said rings together, said rings being of such cross-sectional shape as to press said insulation against said ribs and also .against-said drinn and said rim, and .said ribs having mating notches to accommodate said bosses.

5. A car wheel comprising a hub meinbei having a radially disposed web, an annular member having its outer end mounted on said web with its inner' end extending inwardlyy and having the inner surface of such extending portion concentric with the axis of the wheel to constitutev a brake drum, and a rini member oifsetinwardly with relation to said web and mounted ron the exterior of such brake drum.

6. A car wheel comprising a hub portion,

a web portion and `a rim portion, said webv portion having an annular extension on the inner side thereof whose inner surface is conf centric with the axis'of the wheel and con.

stitutes a bra-ke drum, and said rim portion being lmounted onithe outer surface of said brake drum. r

7. A car wheel comprising an elongated hub portion, a web portion and a rimportion,

said web portion having an annular extension on itsinner Mside with the inner surface of suoli extension concentric with the axis of the lwheel and constituting al brake drum, and said rim portion being mounted onthe extenally. of the axisof 'the wheel with relation to said rim portion.

"'riQr of said annular extension whereby said', webportion is offset outwardly longitudil signed at st. Louis-Missouri, this 3rd any of"August,'l927.

i NELsoN'R. BROWNYER-- 

